Influenza A virus subtype H3N2 (A/H3N2) is a subtype of influenza A virus (IAV). Some human-adapted strains of A/H3N2 are endemic in humans and are one cause of seasonal influenza (flu). [1] Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza). [2]

2025年3月28日 · What Is the H3N2 Flu Virus? H3N2 virus is a non-human influenza virus that normally circulates in pigs but can infect people. Viruses that normally circulate in pigs are “swine influenza viruses.” When these viruses infect humans, they are termed “variant” viruses.

2021年5月28日 · H3N2 is a strain of influenza A. It can have a more severe impact than other flu strains. Learn about recent outbreaks, outlook, prevention, and more.

2023年9月13日 · What is the H3N2 flu? Read on to learn more about this strain of flu, including previous outbreaks, symptoms, treatment options, and prevention tips.

2024年9月6日 · A Weekly Influenza Surveillance Report Prepared by the Influenza Division. This system monitors visits for respiratory illness that includes fever plus a cough or sore throat, …

H3N2 influenza viruses pre-dominated during 3 of the last 5 quite severe influenza seasons. During the 2016/2017 flu season, the H3N2 component of the influenza vaccine exhibited a poor protective efficacy (∼28–42%) against preventing infection of co-circulating strains.

2023年11月24日 · Influenza A virus subtype H3N2, commonly known as “H3N2 flu,” is a subtype of the Influenza A virus, often implicated in seasonal flu outbreaks. This article aims to provide comprehensive insights into H3N2, its characteristics, impact, and management strategies.